L5991D
ActiveCURRENT MODE PWM CONTROLLER 1.5A 1000KHZ 16-PIN SO TUBE
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L5991D
ActiveCURRENT MODE PWM CONTROLLER 1.5A 1000KHZ 16-PIN SO TUBE
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Technical Specifications
Parameters and characteristics for this part
| Specification | L5991D |
|---|---|
| Control Features | Frequency Control, Soft Start, Sync |
| Duty Cycle | 93 % |
| Fault Protection | Over Voltage, Current Limiting |
| Frequency - Switching [Max] | 1 MHz |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Isolation | Isolated |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 16-SO |
| Topology | Boost, Flyback |
| Voltage - Start Up | 15 V |
| Voltage - Supply (Vcc/Vdd) [Max] | 20 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 10 V |
Pricing
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Description
General part information
L5991 Series
This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control.
Based on a standard current mode PWM controller this device includes some features such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded.
Documents
Technical documentation and resources